Insulation test tool structure based on conoPIM2 and PIM3

Abstract

The utility model discloses an insulation test tool structure based on a conoPIM2PIM3, comprising a positioning pedestal and a PCB, the PCB is provided with an inner ring and an outer ring, the inner ring and the outer ring are respectively provided with a plurality of holes, and probes are movably configured in the holes. According to the utility model, the probes are arranged at the corresponding open holes of the inner ring or the outer ring, the positioning base is conducted with the copper wires on the PCB through the probes, the probes are arranged in different open holes according to different to-be-detected products and are tested, and meanwhile, the positioning base is used as a negative electrode for insulation test, so that the insulation test efficiency is improved. The holes of the inner ring or the outer ring are communicated, the probe serves as the positive electrode, and a peripheral machine table is matched, so that AC / DC / insulation resistance testing of different types of products is achieved, the universality of the testing tool is improved, the input cost needed by performance testing of various types of products is reduced, preparation work before testing is convenient to execute, and the overall testing efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic power devices, in particular to an insulation test tooling structure based on econoPIM2PIM3. Background Art

[0002] IGBT, namely insulated gate bipolar transistor, is the "CPU" of power electronic devices and is widely used in fields such as industrial control, rail transit, white household appliances, new energy power generation, and new energy vehicles. The IGBT module integrates multiple IGBT chips together through packaging, achieving the characteristics of greater power and stronger heat dissipation ability, and plays an extremely important role and influence in the field of new energy vehicles. With the progress of technology, the IGBT module has been continuously optimized in performance, such as the reduction of turn-off time and the decrease of energy loss, etc., which have significantly improved its efficiency and reliability. Therefore, the detection technology of IGBT plays a crucial role in ensuring its safe operation and performance in various applications.

[0003] The testing of IGBT modules covers multiple aspects. In terms of performance, it includes but is not limited to static parameter testing and dynamic characteristic testing. Among them, the insulation characteristic of the product is also of crucial importance because it directly relates to the safety and stability of power equipment.

[0004] Insulation testing is an important part of IGBT module testing. Its purpose is to verify the insulation performance between various parts inside the module to ensure that the IGBT module can work normally under high-voltage environments and avoid electrical short circuits or equipment damage caused by poor insulation.

[0005] At the present stage, with the market demand, the types of IGBTs are also randomly diverse. Therefore, the test tooling also changes accordingly, and so does the insulation. Currently, most of the insulation test toolings on the market can only be applicable to single-type products. When testing different types of products, different insulation test toolings need to be used, resulting in higher test costs. And when the number of insulation test toolings is large, the corresponding insulation test tooling needs to be selected before testing, which has a greater impact on the overall efficiency.

[0006] Therefore, there are defects in the prior art and it needs to be improved. Content of the Utility Model

[0007] The purpose of the utility model is to overcome the deficiencies of the prior art and provide an insulation test tooling structure based on econoPIM2PIM3.

[0008] The technical solution of the present utility model is as follows: Provide an insulation test tooling structure based on econoPIM2 and PIM3, including: a positioning base, and a PCB board movably arranged on the positioning base. The PCB board is provided with an inner ring and an outer ring. A plurality of openings are respectively arranged on the inner ring and the outer ring. Probes are movably arranged in the openings. The adjacent openings in the inner ring and the adjacent openings in the outer ring are respectively short-circuited. The positioning base serves as the negative electrode for insulation testing, and the probe serves as the positive electrode for insulation testing.

[0009] Further, copper wires are laid in the PCB board, and the openings of the inner ring and the outer ring are respectively short-circuited through the copper wires.

[0010] Further, the probes arranged in the openings in the inner ring adopt econo-PIM2 package type pins.

[0011] Further, the probes arranged in the openings in the outer ring adopt econo-PIM3 package type pins.

[0012] Further, a plurality of positioning step holes are arranged around the positioning base. A plurality of positioning holes are correspondingly arranged around the PCB board for the positioning step holes. Positioning pins are inserted into the positioning step holes, and the positioning pins sequentially pass through the positioning step holes and the positioning holes.

[0013] Further, the positioning base is made of aluminum alloy material.

[0014] Adopting the above solution, the present utility model loads probes at the corresponding openings of the inner ring or the outer ring, conducts the positioning base and the copper wires on the PCB board through the probes, and according to different products to be detected, different openings are used to set probes and conduct tests. At the same time, by using the positioning base as the negative electrode for insulation testing, connecting the openings of the inner ring or the outer ring and using the probe as the positive electrode, and cooperating with the peripheral machine, the AC / DC / insulation resistance tests of different types of products are realized, the versatility of the test tooling is improved, the cost required for the performance tests of various products is reduced, and the preparation work before testing is convenient to execute, thereby improving the overall test efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic structural diagram of the PCB board.

[0016] Figure 2 It is a schematic structural diagram of the positioning base.

[0017] Figure 3 It is a schematic structural diagram of the first embodiment.

[0018] Figure 4 It is a schematic structural diagram of the second embodiment. Detailed implementation mode

[0019] The following combines the attached drawings and specific embodiments to elaborate on the present utility model in detail.

[0020] Please refer to Figures 1 to 3 , the present utility model provides an insulation test tooling structure based on econoPIM2 and PIM3, including: a positioning base 1 and a PCB board 2 movably arranged on the positioning base 1. The PCB board 2 is provided with an inner ring 21 and an outer ring 22. A plurality of openings 23 are respectively arranged on the inner ring 21 and the outer ring 22. Probes 25 are movably arranged in the openings 23. The adjacent openings 23 in the inner ring 21 and the adjacent openings 23 in the outer ring 22 are respectively short-circuited. The positioning base 1 serves as the negative electrode for insulation testing, and the probe 25 serves as the positive electrode for insulation testing. Copper wires 24 are laid in the PCB board 2, and the openings 23 of the inner ring 21 and the outer ring 22 are respectively short-circuited through the copper wires 24. After assembling the positioning base 1 and the PCB board 2, according to the contact requirements of the product to be detected, probes 25 are installed at the corresponding openings 23 of the inner ring 21 or the outer ring 22, and the positioning base 1 is conducted with the copper wires 24 on the PCB board 2 through the probes 25. According to different products to be detected, different openings are used to set the probes 25 for testing. At the same time, by using the positioning base 1 as the negative electrode for insulation testing, connecting the openings 23 of the inner ring 21 or the outer ring 22 and using the probe 25 as the positive electrode, and matching with the peripheral machine platform, the AC / DC / insulation resistance testing of different types of products is realized, the versatility of the test tooling is improved, the cost required for the performance testing of various products is reduced, and the preparation work before testing is convenient to execute, thereby improving the overall testing efficiency.

[0021] In some embodiments, the probes 25 arranged in the openings 23 of the inner ring 21 adopt econo-PIM2 package type pins, and the probes 25 arranged in the openings 23 of the outer ring 22 adopt econo-PIM3 package type pins, so as to respectively meet the test requirements of the econo-PIM2 package type and the econo-PIM3 package type through the openings 23 of the inner ring 21 and the outer ring 22.

[0022] In some embodiments, please refer to Figure 3 , Figure 4, a plurality of positioning step holes 11 are provided around the positioning base 1. A plurality of positioning holes 26 are provided around the PCB board 2 corresponding to the positioning step holes 11. A positioning pin 12 is inserted into the positioning step hole 11. The positioning pin 12 sequentially passes through the positioning step hole 11 and the positioning hole 26. By passing the positioning pin 12 through the positioning step hole 11 of the positioning base 1 and the positioning hole 26 on the PCB board 2, and by matching the round table at the end of the positioning pin 12 with the step position of the positioning step hole 11, the movement of the positioning pin 12 is restricted, and the positioning pin 12 is passed through the positioning hole 26 of the PCB board 2, thereby fixing the positioning base 1 and the PCB board 2, which is convenient for moving the test fixture to perform corresponding electrical performance tests on the product to be detected.

[0023] In some embodiments, the positioning base 1 is made of aluminum alloy material. Further, the thickness of the positioning base 1 is 5 mm, and the thickness of the PCB board 2 is 2 mm, effectively ensuring that the overall test fixture is relatively light. Moreover, the positioning base 1 made of aluminum alloy material has good electrical conductivity, meeting the requirement of being used as a test negative electrode, and can realize the electrical performance tests of different products.

[0024] Please refer to Figure 3 , Figure 4 , in the packaging structures of IGBT modules currently on the market, there are three types: four-unit, six-unit, and seven-unit. At the same time, the packaging structure types are divided into econo-PIM2 packaging type and econo-PIM3 packaging type, with a total of 6 structural forms, and the corresponding pin contact positions of each structure are different. Therefore, during testing, by setting the probe 25 in different openings 23. For example, when testing a product of the econo-PIM3 packaging type, the corresponding probe 25 is set into the opening 23 at the corresponding contact position in the outer ring 22. Thus, when testing the econo-PIM3 packaging structure, through the one-to-one correspondence between the probe 25 and the contacts, the electrical performance tests of each contact are realized. Similarly, when testing a product of the econo-PIM2 packaging type, the corresponding probe 25 is set into the opening at the corresponding contact position in the inner ring 21. Thus, when testing the econo-PIM2 packaging structure, through the one-to-one correspondence between the probe 25 and the contacts, the electrical performance tests of each contact are realized. By adopting the movable and embedded probe 25 and combining with the openings 23 provided on the inner ring 21 and the outer ring 22 of the PCB board 2, the probe 25 can have different assembly methods, thereby meeting the electrical performance test requirements of different IGBT module packaging structures currently on the market.

[0025] In summary, in the present utility model, probes are installed at the corresponding openings of the inner ring or the outer ring, and the positioning base is electrically connected to the copper wires on the PCB through the probes. According to different products to be detected, different opening settings are used to install the probes and conduct tests. At the same time, by using the positioning base as the negative electrode for insulation testing, the openings of the inner ring or the outer ring are connected and the probes are used as the positive electrode, and in combination with the peripheral machine, the AC / DC / insulation resistance tests of different types of products are realized, improving the versatility of the testing tooling, thereby reducing the costs required for the performance tests of various products, and the preparatory work before testing is convenient to execute, thereby improving the overall testing efficiency.

[0026] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An insulation test tooling structure based on econoPIM2 PIM3, characterized in that: include: A positioning base and a PCB board movably arranged on the positioning base, wherein the PCB board is provided with an inner ring and an outer ring, the inner ring and the outer ring are respectively provided with a plurality of openings, probes are movably arranged in the openings, adjacent openings in the inner ring and adjacent openings in the outer ring are respectively short-circuited, the positioning base serves as a negative pole of the insulation test, and the probes serve as a positive pole of the insulation test.

2. The insulation test tooling structure based on econoPIM2 PIM3 according to claim 1 is characterized in that: Copper wires are laid in the PCB board, and the openings of the inner circle and the outer circle are short-circuited by the copper wires respectively.

3. The insulation test tooling structure based on econoPIM2 PIM3 according to claim 1 is characterized in that: The probes configured in the openings in the inner ring adopt econo-PIM2 package type pins.

4. The insulation test tooling structure based on econoPIM2 PIM3 according to claim 1, characterized in that: The probes configured in the openings in the outer ring adopt econo-PIM3 package type pins.

5. The insulation test tooling structure based on econoPIM2 PIM3 according to claim 1, characterized in that: A plurality of positioning step holes are arranged around the positioning base, and a plurality of positioning holes are arranged around the PCB board corresponding to the positioning step holes. Positioning pins are inserted into the positioning step holes, and the positioning pins pass through the positioning step holes and the positioning holes in sequence.

6. The insulation test tooling structure based on econoPIM2 PIM3 according to claim 1, characterized in that: The positioning base is made of aluminum alloy.

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